For a semi-formalweddingday attire, the groom may dress in a dark-grey suit jacket with a dove-grey or buff waistcoat and optionally a wedding tie. For a semi-formal funeral day attire, the mourner may wear a matching black jacket and waistcoat presumably with black necktie.

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In British English it is called black lounge suit. Since black was reserved for formal wear, it was unknown as a colour for lounge suits, so the term was unambiguous. It has also been referred to as Marlborough suit in the U.K. In American English, the style is sometimes called a stroller.

In early 20th century, Gustav Stresemann, like other German politicians of his age, wore morning coat or a frock coat in the Reichstag or when making public appearances. However, Stresemann found the long knee-length coats impractical for daily work in the Chancellery. To avoid having to change completely, he began to wear the prototype of this jacket at his office, thus giving reason to the style's synonym, while switching to a morning coat when engaged on more formal business. This his style was introduced during the negotiations of the Locarno Treaties in 1925, and quickly caught on as a more practical variation of morning dress

In the United Kingdom this mode of dress is now unusual, though the dress code sometimes does occur in fraternal orders such as Freemasonry for semi-formal daytime meetings. It is also still worn within the legal profession, especially by barristers. Indeed, the striped formal trouser are in some circles referred to as "barrister trousers".

The stroller's apparent decline in use, as opposed to the staying power of its evening counterpart the dinner jacket, could be attributed to several factors: daytime formality in general, and specifically the standard of changing clothes for various occasions, fell out of general use in post-World War II Western culture; and strollers were sometimes associated with uniformed servants, a concept which had also fallen out of favour. By the late 20th century, fictional characters in media depicted wearing strollers were often portrayed as self-important or inflexible snobs, often in opposition to more sympathetic characters dressed casually.

In the 1964 Walt Disney film Mary Poppins (set in the 1910s), the character of Mr. Banks wears a stroller to work every day at the bank. In the long-running BBC sitcom Are You Being Served? (1972-1985), the character Captain Peacock always wore a stroller as the store's floorwalker. Gentlemen's valets of the early 20th century are often depicted in television and film wearing strollers as their standard apparel. The character of John Bates of Masterpiece's Downton Abbey typically appears in a stroller while serving as his lord's valet.